Wire bending apparatus



M. H. PAYNE ETAI.5 3,027,920

WIRE BENDING APPARATUS April 3, 1962 Filed March 27. 1957 6 Shees-Sheetl1 April 3, 1962 M. H. PAYNE ETAL 3,027,920

WIRE BENDING APPARATUS M. H. PAYNE ETAL WIRE BENDING APPARATUS April 3,1962 6 Sheets-Sheet 3 Filed March 27, 1957 Win-! April 3, 1962 M. H.PAYNE ETAL WIRE BENDING APPARATUS 6 Sheets-Sheet 4 Filed March 27, 1957April 3, 1962 M. H. PAYNE ETAL 3,027,920

WIRE BENDING APPARATUS Filed March 2'?, 1957 6 Sheets-Sheet 5 INVENTORS.

@ar/d dwf@ 207/@ April 3, 1962 M. H. PAYNE ETAL WIRE BENDING APPARATUS 6Sheets-Sheet 6 Filed March 27. 1957 www United States atent thee3,027,920 WIRE BENDING APPARATUS Matthew H. Payne and Byard D. Simpson,Chicago, Ill.,

assignors to Cedar Rapids Block C0., a corporation of This inventionrelates to a bending apparatus, and more particularly to a machine forbending wire.

The wire bending apparatus of the instant invention is generally similarto the wire bending apparatus of the copending application of LloydTalbot and Byard D. Simpson, Serial No. 343,636, led March 20, 1953, andnow issued as Patent No. 2,792,852, and comprises an improvementthereof.

A feature of the present invention is the provision of a bending machinehaving new and improved means for relaxing of decreasing slightly theamount of tiexnre of the bending arms subsequent to a bending operation,for improved ease in removing the bent wire from the bending arms.

Another feature is the provision of means for adjustably associating themeans for bending the arms with the frame and bending arms for effectingimproved ease in adjustment and operation of the bending arms.

A further feature of the invention is the provision of new and improvedmeans for moving the wire longitudinally through the machine, comprisinga piston operated jaw means operably associated with related machineoperating means.

Still another feature of the invention is the provision of new andimproved means for removing the bent wire from the bending arms which isoperably coordinated with the gripping and bending means.

A yet further feature of the invention is the provision of new andimproved means for delivering discrete portions of the bent wire,comprising a delivery table and a new and improved pivotally movable armmeans associated therewith,

Other features and advantages of this invention will be apparent fromthe following description taken in connection with the accompanyingdrawings wherein:

FIG. l is a schematic plan view of a wire bending machine embodying theinvention;

FIG. 2 is a schematic side elevation thereof',

FIG. 3 is an enlarged, fragmentary plan view of a completed wire deviceformed in the machine;

FIG. 4 is an enlarged, fragmentary plan View of the bending apparatus ofthe machine;

FIG. 5 is an enlarged, fragmentary plan view of a portion of the bendingarm means;

FIG. 6 is an enlarged, fragmentary side elevation of the means forrelaxing the bending arms;

FIG. 7 is an enlarged, fragmentary sectional view taken approximatelyalong the line 77 of FIG. 4;

FIG. 8 is an enlarged, fragmentary vertical section taken approximatelyalong the line 8-8 of FIG. 4 showing the bumper means on the bending armpiston cylinder;

FIG. 9 is a view similar to that of FIG. 8 showing another form ofbumper construction;

FIG. 10 is an enlarged transverse section taken approximately along theline 14)-16 of FIG. 4;

FIG. l1 is a fragmentary, isometric View of the means for moving thewires laterally relative to the bending means;

FIG. 12 is an end elevation of the delivery means;

FIG. 13 is a horizontal section taken approximately along the line 13-13of FIG. 12;

FIG. 14 is an enlarged side elevation of the gripper mechanism, withportions broken away;

FIG. 15 is an end elevation thereof;

FIG. 16 is a vertical 4section taken approximately along the line 16-16of FIG. 14; and

FIG. 17 is a schematic, electro-mechanical diagram of the operatingmeans of the machine.

VIn the exemplary embodiment of the invention shown in the drawings, awire bending machine is seen to comprise a wire feed means generallydesignated 10, a knurling device 11, a bending mechanism generallydesignated 12, a welding mechanism generally designated 13, and adelivery means generally designated 14 including a cutting mechanism 15for separating the continuous bent wire into discrete portions and apusher means 16 for moving the discrete portions onto suitable transfermeans.

In the illustrated machine, three separate wires 17,

18 and 19 are operated upon by the machine to form a j mortarreinforcing device 2i), such as seen in FIG. 3. welding means 13, whichserves to secure wire 18 to each of wires 17 and 19, and cutting means15 are similar to the welding and cutting means of the Talbot andSimpson application, referred to above, and no further description needbe given here. The bending means 12 and pusher means 16 compriseimproved modifications of the bending and delivery means of the Talbotand Simpson application, and the improvements therein are. set forthmore specifically here following.

Wires 17, 18 and 19 are fed from their respective.

supply spools which are mounted on suitable pedestals, such as pedestals21 and 22. At the in-feed end of the machine is the knurling means 11which knurls the Wires asdesired for improved gripping action with themortar. While center wire 1S may be left unknurled, it is preferred thatit, as well as the outer wire 17 and 19, be driven by the knurlingmeans. Thus, each of the wires is fed longitudinally at a substantiallyconstant rate. During the bending and welding operations o n the wires,however, the wire portions in the bending and welding means must bestopped. Thus, a take-up loop in each of the wires, such as take-up loop19' as seen in FIG. 2, must be provided to accommodate thisv differencein the movement of different portions of the continuous wires.

The means for moving the wires discontinuously in t the machine may bestbe seen in FIGS. 4, 14, 15 and 16v and comprises a push rod 23 movablymounted on the frame 24 of the machine and reciprocated by means of asuitable piston device 25 (FIG. l) secured to the frame. Extendingacross the machine at the in-feed end of the bending means is a carrier26 carrying at one end 26a a support 27 having a removable plate 27a onwhich central wire 18 may rest.

Means for clamping the wire xedly against plate 27a to move the wirelongitudinally with carrier 26 when the push rod 23 is moved, comprisesa jaw member 28 pivotally mounted on support 27 by means of a post 29.As best seen in FIG. 14, the jaw is movable alternatively between awire-released position (shown in full lines) and a wire engaged position(shown in broken lines). The means for effecting this alternativedisposition is shown to comprise a piston means 30` having a housing 30apivotally carried on the support 27 by means of a post 36h. The movablepiston 30C Within housing 30a is provided with a piston rod Sildprojecting outwardly from the housing and having its outer end pivotallyconnected to jaw member 28. Biasing means in the form of a spring 30emounted within the housing acts against the piston to urge the rodinwardly of the housing and pivot the jaw member to the wire releasedposition. A hydraulic supply line 30j serves to deliver hydraulicpressurized uid to the piston to overcome the spring and urge theapaaaao rod outwardly through the housing and the jaw'member into thewire engaging position.

To allow for ready replacement of wearing parts, plate 27a may beremovably secured to support 27 by means of screws Zib, and the supportitself may be secured to the carrier end 26a by means of screws 2Gb andclamping plates 26C. Further, jaw member 28 may be provided with aremovable wire engaging portion 23a secured to the jaw member by meansof a screw 2gb and txedly retained in proper position by means of a setScrew 28e. To

retain the jaw member laterally within a carrier recess 26d, a retainingplate 31 is secured across the recess by means of screws 31a.

The means for gripping and moving outer wires 17 and 19A comprisesimilar jaw member devices carried on a carrier 32 associated with thepiston device 25 between the welding means 13 and the `cutting means 15.Each of the jaw member devices is similar, except that the retainingplates of the devices (not shown) on carrier 32 are open adjacent the`wire supporting plate 27a (as the retaining plate would otherwiseinterfere with the bent wire extending from each of the outer wires andsecured thereto in the Welding means). A in the wire released position,push rod 23 may be moved rearwardly (toward the infeed end of themachine), moving carriers 26 and 32 tol a position where they aredisposed properly for next engaging the wire.

The jaw members 28 and piston means 25y are arranged to'move the wiresintermittently approximately one-half of the time. The remaining portionof the time, the wire portionsv in the machine are retainedlongitudinally fixed while the bending and welding operation occurs. Totake up'the'slack portion of the wire inthe knurling meansv (such asloop'19) 'which accumulates in `the knurling device 11 during the timethe wires are held stationary in themachine, piston device movescarriers 26 and 32'in a forward direction (to the left, as seen in FIGS.l and 4) preferably at a rate substantially greater than the rate atwhich the wires are moved by the knurling means 11. A By correlating therelative speeds' properly, acondition may be obtained wherein'the slackaccumulating inH the knurling device is repeatedlyeliminated withoutaltering thespeed of the knurling device, although in prac'- tice someslight adjustment thereof may be required from time to time.`

Referring now more specically to FIGS. 4 Vthrough 1l, bending means 13is seen to be mounted on a platev33 secured to frame 24 and including anupstandingbearing means 34A rotatably supporting a shaft 35 carrying yatits upper endone end of a bending arm 36. The otherend of'the arm" 36 ispivotally connected at 37 to a second bending arm 38 rotatably supportedIat its other end by a shaft 39. The shaft 39 is mounted in a movableslideV 40 held in an undercut slideway 41.

For retaining the wire 18 removably on arms 36 and 38i`respectively, arm36 is provided with a pair of guide blocks 42 and 43 mounted at one endof the arm and another pair of guide blocks 44 and 45 mounted at theother end of the arm adjacent pivot 37. Arm 33 is provided with a pairof guide blocks 46 and 47 mounted at theend adjacent pivot 37 and asecond pair of guide blocks 48 and 49 mounted adjacent shaft 39.

Wire 18 is yfed -to the arms when they are in the linearly alignedposition of FIG. 4 and extends between the respective elements of theguide block pairs. A means 50 for operating or pivoting the arms to bendwire 18 thereon comprises a power plate or lever 56a secured at one endto the end of arm 38 adjacent shaft 39. A piston rod 51 secured to apiston 52 reciprocably carried in a piston cylinder 53 is pivotallyconnected at 5012 to the power plate Stia. As the piston 52 is moved tothe left (as seen in FIG. 4), rod 51 acts through power plate 50a topivot arm 38 clockwise about shaft 39 and arm 36 counterclocldtwise:about vpivot 35A. Shaft 39 is concurrently moved'to the left by means ofslide 49 being moved When jaw member 2S is` through slideway 41 untilthe bending arms are disposed` in a wire bending position, as seen indotted lines in FIG. 4.

In order to bend properly the wire l8 to the final desired shape, asseen in FIG. 3, it is necessary, because of the natural resilience ofthe wire, to overbend the wire slightly. The instant inventioncomprehends a novel means for effecting this overbending. To this end,piston cylinder 53 is pivotally secured at end 53a to a bar 54 which isclamped to an arm 55 pivotally secured at one end 55a to the frame 24 ofthe machine. A retaining plate 56 is secured in overlying relationshipto the bar 54 by means of suitable bolts 56a which xedly secure theretaining plate to the arm 55. Pivotal movement of arm 55 about end 55ais effected by means of a piston device 57 pivotally secured to themachine frame and having an operating rod 57a pivotally connected to thefree end 55h of arm 55. When piston device 57 is actuated, it draws armend 5511 counterclockwise (as seen in FIG. 4) until bar 55 strikes astop 58 adjustably retained on the machine frame by means of bolts Sbaand 56h (FIG. 7). Piston device 57 is biased to dispose rod 57a in theposition of FIG. 4 when the device is not actuated, thereby spacing rod55 from stop 58'and positioning piston cylinder 53 slightly to the leftof the stops, as seen in FIG. 7.

The travel of piston 52 through cylinder 53 is controlled by theabutment of the piston with the end 53h of the piston cylinder throughwhich rod 51 extends. When the piston is disposed at this limit of itstravel, the arms 36 and 38 are bent to the maximum and are, in fact,pivoted slightly beyond the position wherein the desired bending of wire18 occurs. With the piston held against cylinder end 53h, piston device57 is actuated to move the piston cylinder 53 to the right, as seen inFIG. 4, and, consequently, to move piston 52 within the cylinderslightly to the right, thereby decreasing slightly the amount ofpivoting of the bending arms. This functioning is herein referred to asrelaxing The specific amount of such relaxing effected is Such that thenatural resiliency of the Wire is accommodated, and the wire beingformed lies loosely in the guide blocks, whereby it may be easilywithdrawn by elevation therefrom.

The wire bending means as disclosed may be utilized for bending wires toproduce modified forms of configurations other than that illustrated inFIG. 3. To this end, different bending arms having different lengths maybe provided. To limit properly the return movement of piston rod 51, abumper 53a associated with front end 53h of the piston cylinder 53 ismade removable by means of screws 53d to allow the use of differentlength front ends. Such a modified front end 53e is shown in FIG. 9 asinstalled on the cylinder. Further, to provide for adjustablepositioning of cylinder 53 relative to machine frame 24, the connectionof end 53a to bar 54 ismade adjustable by providing a plurality of holes54a in bar 54 for cooperation with dowel pin 54h retained by retainingplate 56.

The means provided for carrying the wire in the bending means andelevating it subsequent to the completion of the bending operation,comprises a movable frame generally designated 59, which is generallysimilar to the frame of the Talbot and Simpson application, referred toabove. To provide improved correlation of this wire carrying means'withthe longitudinal Wire moving means, however, frame 59 is movedvertically relative to machine frame 24 by suitable piston means 60 and61 through respective piston rods 62 and 63 which are secured at theirupper ends to the frame 59. Associated with one ofthe piston rods,illustratively rod 63, is a cam 64 arranged to actuate a pair ofswitches 65 and 66 associated therewith. Piston means 60 and 6l arearranged to be actuated during the time piston device 25 is actuated tomove Athe carriers 26 and 32 toward the infeed end of the machine. Themeans for eecting this coordinated functioning is described in greaterdetail in subsequent description of the machine control means.

To elfect an overbend of the wire 18 at pivot shaft 35, a novel bendingblock structure is provided comprising a finger 67 which is adjustablypositioned on a support member 68 rotatably mounted on shaft 35. Supportmember 68 is pivotally connected to a support member 69 pivotallyconnected to a second arm 70 iixedly secured to bending arm 38. Thus, asthe bending arms are pivoted to the wire bending position, supportmember 68 is pivoted clockwise about shaft 35 to bring finger 67 intocontact with wire 18 and overbend the wire slightly at this point. Thedegree of overbend achieved during this operation may be `adjusted bypositioning a screw 71 through an upstanding flange 72 on support member68, which screw bears against finger 67 and positions it properly abouta retaining screw 73 securing the finger fixedly to the support member.

As discussed briefly above, the completed wire device 29 is fedcontinuously from the bending and welding portions of the machine to thedelivery means 14 where it is cut into discrete portions by the cuttingmechanism 15. As best seen in FIGS. l2 and 13, a new and improved pushermeans 16 is provided for effecting delivery of the discrete devices to asuitable transfer means shown fragmentarily at 74. Mounted on the lowerend of an upright 76 carrying a table top 77 on which the formed wiredevices rest, is a pivot member 75. Pivotally carried by member 75 is apusher arm device comprising a first arm 78 extending generallyhorizontally `from pivot 75, a second arm 79 fixedly associated with thefirst arm to extend angularly upwardly from pivot 75 to a point slightlyabove one side of table top 77, and a third arm 80 extending from theupper end of the second arm to lie generally horizontally a smalldistance above table top 77. Suitable means 81 and 82 are secured to theouter end of arm 80 for engaging a wire device 29 on the table top andto effect movement thereof as an incident to movement of arm 80 acrossthe table top.

The means for effecting operation of the pusher arms comprises anextensible mechanism` herein disclosed as a piston member 83 having itscylinder `83a pivotally secured at 83b to an arm 84 fixed-ly secured toupright 76 at a point above pivot 75. Piston rod 83C is pivotallysecured at 83d to the outer end of rod 78 whereby longitudinal movementof piston rod 83e elects a pivotal movement of arm 78 about pivot 75.

The limits of travel of the pusher arm structure are controlled by astop member 85 comprising an arm 85a fixedly secured to support 76 at apoint below table top 77 to extend generally horizontally. At its outerend, arm SSa is provided with a stop 85h arranged to engage second arm79 to limit its pivotal movement away from table top 77. A second stop*85C is provided on arm 85a to engage arm 79 and limit its pivotalmovement about pivot 75 toward table top 77 Stop 85e is preferablyadjustable and is shown to comprise a pin 85d carried on a block 85ethreadedly associated with a rod 851 connected to arm 85a by means ofsupports 85g and 35h. By manipulation of rod 85f relative to block 85e,the positioning of pin 85d may be made proper for accommodating wireengaging means '81 and 82 to the specific device 20 which is to bedelivered by means 14.

The operation of the wire bending apparatus may best be understood byreference to the electro-mechanical schematic diagram of FIG. 17. Forpurposes of illustrating the operation, the arrangement of the controldevice, as seen in FIG. 17, is shown as at one point in the cyclethereof, namely, at a time when push rod 23 has reacheddifferent pointsthereon. Thus, the cutting mechanism 15 is operated less frequently thanare the bending and welding mechanisms. The first cycle of the operationof the machine described here following relates only to the bending andwelding operation.

Electrical power is delivered to the machine from a suitable sourcethrough a suitable disconnect means such as double pole switch 86. Tosimplify illustration of the diagram, one of the secondary leads fromthe switch S6 is shown grounded at 37, although in practice it should beunderstood that this lead may comprise an electrical conductor connectedto the various points of ground associated with the elements 0f thecontrol circuit. A second lead 88 serves as the opposite side of theline for the various control elements. A normally open switch 89 isconnected to lead 88 in series with the movable contacts 99a' of asingle pole, double throw switch 90. Contact 96a is normally closed witha contact 90b. When push rod 23 is at the forward end of its travel, itcloses switch 89 to energize a solenoid 91 through contacts 90a and 9%.Solenoid 91 is associated with a valve 92 for operation of piston means60 and 61 to move frame 59 downwardly. Valve 92 is preferably of a typeallowing emergency manual operation.

When frame 59 reaches the lower end of its movement, cam 64 thereoncloses the normally open switch 65 to energize, from lead 83 and througha set of normally closed contacts a of a relay 95, a solenoid 93associated with the bending mechanism 12 and a solenoid 94 associatedwith the welding mechanism 13. Solenoid 93 operates a valve 96 toactuate the piston device associated with the bending arms 36 and 3S topivot the bending arms 36 and 38 to the wire bending position. Solenoid94 controls a valve 97 to operate suitable means for moving a pair ofwelding heads 93 toward each other to clamp the wires to be weldedtogether therebetween. The actuation of valve 97 closes a pressureresponsive switch 99 which in turn energizes a suitable timer lili) forcontrolling a supply of electrical welding energy to the welding heads.The structures of such pressure responsive switches and timers are wellknown in the art and need no further description here.

A single pole, double throw switch 101 is actuated by the bending armsto close its movable contact 1.01ct with the normally open contact 19117connected through switch 99 to lead 8S. Contact 161m is in turnconnected to the coil of relay 95, and thus relay 95 is energized toopen its contacts 95a and close a set of normally open contacts 95hwhich serve to provide a holding circuit from lead 88 through switch 65.

Also connected to contact 1010 is solenoid 162 controlling a valve 103associated with the piston device 57 to effect a relaxation of thebending arms7 as described above, and a solenoid 104 associated with avalve 195 for operating piston device 25 to move the push rod rearwardly(to the right, as seen in FIG. l) thereby opening switch 89. Valve 105is preferably of a type which may be manually operated when desired toeifect emergency operation of the piston device 25 As soon as thebending arms are relaxed from the fully flexed position, they allowcontact lilla to leave contact 101b and close with a normally closedcontact 101C. It should be noted at this point that the disconnection ofcontact lilla from lead 8S has no effect on the condition of relay 95 asthe holding circuit established through contacts 95b is holding therelay energized. When push rod 23 reaches the rearward end of thetravel, it closes a normally open switch 106 which is connected inseries with contact 101e to energize a solenoid 107 associated withvalve 97 thereby to open or space the welding heads. A normally openswitch 108 is connected in series with switch 106 and is arranged to beclosed by engagement thereof by the opened welding heads, to energize asolenoid 109 associated with valve 92 thereby to operate piston devices60 and 61 and elevate frame 59. When cam 64 associated with frame 59moves to the upper end of its travel, it closes normally open switch 66which is connected in series from lead S8 through a manually. operableswitch 110 to a solenoid 111 associated with valve 105 to operate thepiston device 25 and move push rod 23 forwardly. Connected in parallelwith solenoid 111 from switch 110 is a solenoid 112 associated withvalve-95 to pivot the bending arms to their linearly aligned positionfor receiving a subsequent portion of wire 18 to be bent. The connectionto solenoid 112 is through a manually operable single-pole, double throwswitch 113 having its movable contact 113a closable with a contact 113/5connected to lead 8S, so that the solenoid 112 may be operated manuallydirectly from the power supply when desired.

Having considered the bending and welding cycle, the delivery cycle willnow be described. When a sutiicient number of bending and weldingoperations have been performed on the wires to provide a device 2t? ofthe desired length, the forward end of the formed device 2d acts onswitch 9S to move the movable contact 90a from contact 90b and intocon-tact with a normally open contact 90C. At this time the push rod 23is at the forward end of its travel, and switch 89 is closed, therebyproviding power from lead S8 through switch 89 to contact 9de. Connectedto contact 96e is a solenoid 114 which cornprises a portion of thepunch-press-type cutting mechanism and which causes the cuttingmechanism to separate a device from the continuous supply of formedwires. Associated with the cutting mechanism is a cam 115 which isarranged to close a normally open switch 116. Switch 116 is connected inseries with a second solenoid 117 effecting operation of a secondcutting element of mechanismlS. rlwo such cutting elements are used inthe instant device, allowing the separating of two devices 20 duringeach cutting operation, although it should be understood that thisismerely for improved manufacturing economy, and a cutting mechanism 15may be provided which will effect one or more separations in oneoperation as desired.

Associated with the second cutting element is a second cam 118 arrangedto close momentarily a normally open switch 119 which is connected inseries with contact 9de, and to energize a relay 12o for controlling thepusher means 16. When relay 1Z0 is energized, it closes a set ofnormally open contacts 12th: which serve as a holding circuit byconnecting the relay directly to switch 39.

Concurrently with energization of relay 120, switch 119 energizes asolenoid 121 associated with a valve 122. Valve 122 operates psitondevice 83 of pusher means 16 to move arm 8G across table '77 and deliverthe operated device Zt) to the transfer means 74. When arm 80 reachesthe limit of its movement as determined by adjustable stop 85C, means80a thereon effect closing of a normally open switch 123 connected inseries with a set of normally closed contacts 102b of relay 12)` and asolenoid 12d associated with valve 122 for controlling the valve inopposition to solenoid 121. As discussed above, however, relay 12@ isenergized and contacts 12% are open so that no energy is provided tosolenoid 124 at this time.

When the cut device 2i) is pushed from table 77 by arm Si), it releasesthe movable contact 90a of switch 90 from contact 90e and allows it toengage contact 9tlb. Thus, the circuit is reestablished to solenoid 91through switches 89 and 99, thereby recommencing the cycle of thebending and welding operations described previously. As soon as push rod23 moves away from switch 89, that switch is opened, and the holdingcircuit of relay 12@ through contacts 12M thereof is broken. Thus whenswitch 89 is again closed upon the next return of push rod 23 to theforward end of its movement, contacts 12tlb are closed, and the circuitto solenoid 124 is established from lead 8S, through switch S9, contacts12%, and switch 123, which last-named switch has been held closed duringthis time.V Solenoid 12d, thus` actuates valve 122 to cause piston meansS3 to return the pusher means 16 'to the posig tion of FG. l2, awaitingthe completion of another device 20.

While I have shown and described certain embodiments of my invention, itis to be understood it is capable of many modifications. Changes,therefore, in the construction and arrangement may be made Withoutdeparting from the spirit and scope of the invention as defined in theappended claims.

We claim:

l. In a wire bender having a frame, bending means comprising: a pair ofarms movably associated with the frame and pivotally connected to form abending knee; means for removably retaining a wire on the arms; a leversecured to an arm for pivotal movement to operate the arms; power meanshaving a housing and a piston reciprocabiy movable through the housingand provided with a rod connected at its outer end to said lever; meansfor moving the piston to an extreme position relative to the housing toeffect a predetermined amount of pivoting of the arms; and meansconnecting the housing to the frame and arranged to move the housing,subsequent to the effecting of the predetermined amount of pivoting ofthe arms, to move the entire power means while maintaining the piston insaid extreme position and thereby move the arms to an arrangement oflesser pivoting.

2. ln a wire bender having a frame, bending means comprising: a pair ofarms movably associated with the frame and pivotaliy connected to form abending knee; means for removably retaining a wire on the arms; powermeans having a housing .fixed at one end to a bar movably carried by theframe and a piston reciprocably movable through the housing and providedwith a rod cxtending to outside the housing and associated at its outerend with said arms for eiecting a pivoting thereof; stop means forlimiting the movement of the piston relative to the housing to anextreme position proper to effect a predetermined amount of pivoting ofthe arms; piston means associated with the bar and frame and arranged tomove the bar, subsequent to the effecting of the predetermined amount ofpivoting of the arms by the rod, and to cause said stop means to actagainst the' piston and move thc rod to move the arms to an arrangementof lesser pivoting; and means for adjustably limiting the movement ofthe bar effected by said piston means.

3. Means for delivering bent wire devices, comprising: means for cuttingthe bent Wire into discrete portions; a table having an upright supportand a fiat top for supporting discrete portions of the bent wire; pivotmeans fiXedly associated with the upright; pusher means pivotallycarried by said last-named means and having a first arm extendinggenerally horizontally from the pivot means, a second arm extendingupwardly from the pivot means to adjacent one side of the table, and athird arm extending from the second arm to move across the top of thetable when the second arm is pivoted about the ivot means; extensiblemeans; means pivotally securing one end of the extensible means to theupright; means.

pivotally securing the opposite end of the extensible means to a freeend of the first arm; means operating the last-named means to move tl cpusher means in coordination with the means for cutting the Wire toeiiect a movement of the-third arm across the table top subsequent to acutting operation; and a fourth arm secured to said support to extendsubstantially horizontally subjacent the table top with a first stop atone end thereof for abutting the second arm and limiting the movement ofthe pusher means in one direction, and a second, adjustable stop forabutting the second arm and limiting the movement of the pusher means inthe opposite direction to a position wherein third arm is moved acrossthe table top sutiiciently to urge a discrete portion or the bent wirelaterally from said table top.

(References ou following'pa'ge) 9 References Cited in the le of thispatent UNITED STATES PATENTS Francher et al. June 17, 1930 Borton May22, 1934 5 Haller Apr. 19, 1949 Blume Jan. 31, 1950 Travis Sept. 22,1953 10 Ammann et al. Dec. 28, 1954 Powers Oct. 25, 1955 Talbot Nov. 1,1955 Cootes et al. Oct. 9, 1956 Talbot et al. May 21, 1957 FOREIGNPATENTS Great Britain Feb. 15, 1956

